Paper-making machine



Dec. 18, 1928. 1,695,873

H. R. WILLIAMS PAPER MAKING MACHINE Filed Maych 24. 1926 ,Pat ented Dec. 18,-1928.

, UNITED STATES 1,695,873 PATENT OFFICE.

HARRISON R. WILLIAMS, CF CHICAGO, ILLINOIS.

lAPERv-MAKING MACHINE. 1

Application filed March 24, 1926. Serial No. 96,912

taineron to a traveling screen, whereby a' layer or stratum of the pulp is deposited thereon, and that when dried constitutes the Sheet of paper or blotting-paper referred to.

-Such tank is desirably fitted with an agi tator or stirrer operated mechanically to maintain the pulp uniformly distributed throughout the liquid and throughout the extent of the tank, and means arealso employed to assure an even and'smooth delivery flow of the liquid on to the screen-conveyor and in such a manner as not to be detrimentally influenced by the action of the agitator.

Thus, the conditions under-which the sheet of paper is made remain substantially constant, and a uniform product is the result. To enable those skilled in this art to have a full and complete understanding of this invention, both from structural and functional standpoints, in the accompanying drawing, forming a part of this Specification,

I have illustrated, more or less dia rammatically, a present desirable and pre erred embodiment of such invention.

In the single figure of the drawing, the improved machine is illustrated, somewhat fragmentarily, in vertical section.

Referring to this drawing, it will be per-,

ceived that the pulp-charged liquid is delivered through 'a valve-equipped, supply pipe 11 to a sup ly'tank 12, and the feeding of such liquid t ereto may be substantially uniform or intermittent, as may be convenient or desirable.

This tank 12 is equipped with a cork or other float riding. or floating on the top of such liquid, the-member 13 having an upright gpipe 14: extended therethrough, so that the liquid may be withdrawn through it by P s'iphonie action. v

.The pipe 14 is connected to a flexible tube or pipe 15 and the. latter is associated with a p1pe'16 delivering into the second or lower tank or receptacle l7, ipe 16 having a control valve 18 governing t e'flow ofliquicl from the-one tank to the other. Obviously, after such liquid siphonic flow has been once initiated or established through screen, whereb such suitable connections from the upper tank to the lower one, it will continue automatically so long as the supply of liquid lasts, and as this is replenished continuously or at sufficiently frequent intervals, the operation of making the paper proceeds without interruption.

' The receptacle or tank 17 has inside of it a rotary agitator or stirrer 19, of any usual or convenient form, and power-driven from a source not shown, whereby the liquid in such tank is maintained in a proper disturbed or stirred condition to insure uniformity throughout.

Above the rotating blades or arms of such agitator, the tank ,or stirring chamber is fitted with a fine-mesh screen 20, the latter being preferably, but not necessarily, curved as illustrated.

Above this screen the tank or receptacle, along one side, is supplied with a curved rim or lip 21, over which the pulp-charged liquid continuously overflows. in a uniform stream of unvarying depth or thickness, such stream delivering on to the upper surface of a constantly-traveling, endless screen 22 operated by power means not shown because its construction is well-understood.

Below such part of the screen, and near the point where the ulp is delivered on to it,the appliance inclu es an apertured suction-pipe 23 extended crosswisethe' full width of the the liquid which does not immediately rain throu h the screen is drawn down through suc pipe, leaving a partially-dried layer or stratum of pulp on the screen. 1

The pulp thus resting on the advancing screen travels under a marking roller 24 positioned or located above a screen-supporting, idle roller 25, so thatv any desired mark or design may be applied to the product by such up er roller.

s the layer of pulp proceeds on its forward travel, it passes over a series of steamheated coils or pipes 26, thus resulting in the roduction of a continuous dry sheet of paper or the like, the thickness of which may be easily controlled by regulating the amount of liquid permitted to pass through valve 18, this in turn determining the amount of overflow .from the tank 17 to the conveyor-screen.

If liquid flowed or passed through a pipe connecting the lower part of compartment 12 with the receptacle 17, thenthe very heavy particles settling down to the bottom of the compartment would be passed to tank 17 where they would be a possible source of trouble by clogging up the screen 20. By virtue of the arrangement described, however, this diificulty is avoided.

This invention is not limited and restricted to the precise and exact details of structure illustrated and described, and these may be changed or modified within comparatively Wide limits without departure from the heart and essence of the invention as defined -by the appended claims, and without the sacrifice of any of its substantial or materia benefits and advantages.

I claim:

1. In a paper-making machine and the like, the combination of a movable reticulated conveyor, means to actuate said con-.

' conveyor, means to actuate said conveyor, a

tank having a delivery overflow on to said conveyor, a supply tank, means to admit liquid to said supply tank, a float in said supply tank, and a siphon connection between said float and said first tank to secure the discharge of the liquid in said supply tank to said first tank.

3. In a paper-making machine and the like, the combination of a movable reticulated conveyor, means to actuate said conve or a tank havin a mar inal li over 7 b which the liquid in the tank may overflow on to said conveyor, an agitator in said tank, means to prevent the action of said agitator "influencing substantially the liquid at said lip, a supply tank, means to admit liquid to and a screen in said tank between said agita-- tor and said 11p, said screen being curved so a as to be substantially normal to the direction of flow of liquid from the agitator.

In witness whereof I have hereunto set my hand.

HARRISON H. WILLIAMS. 

